Yale-New Haven Hospital

Phone Numbers

Directory assistance
(203) 688-4242

Patient information
(203) 688-4177

Adult emergency
(203) 688-2222

Children's emergency
(203) 688-3333

Admitting
(203) 688-2221

Children's admitting
(203) 688-3331

Psychiatric admitting
(203) 688-9907

Mailing address:
Yale-New Haven Hospital
20 York Street
New Haven, CT
06510-3202

Birthmarks

Birthmarks

Picture of a mother and child

What are birthmarks?

Birthmarks are areas of discolored and/or raised skin that are apparent at birth or within a few weeks of birth. Birthmarks are made up of malformed pigment cells or blood vessels. About 10 in every 100 babies have vascular birthmarks (birthmarks made up of blood vessels).

Although the cause of birthmarks is not known, most of them are benign (non-cancerous) and do not require treatment. Babies with birthmarks should be examined and diagnosed by a physician.

What are the most common types of vascular birthmarks?

The following are the most common types of vascular birthmarks:

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Online Resources of Dermatology

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